When we lived together, before compiling a playlist was a thing, Llŷr and I would often make each other mix-tapes, and later mix CDs, a habitually eclectic mix of stuff we knew the other would like, or already owned but sounded good in the context of the playlist, or wanted to introduce the other one to.
We would take it in turns: I’d do one for him, a week or so later I’d get one back, and so on. There was no one-upmanship going on here, no “Don’t you know this???”, more a mutally respectful “You probably know this, but if not, you’ll like it, I think.”
Often, one of us putting a song on a mix CD would induce the other into putting a different song by the same artiste on the reply CD. It was our way of saying, “Yeh, I know them, that one’s pretty good, but have you heard this…?”
By way of an example, one day I put this on a mix CD, pretty much the only song I knew by the group at the time:
And he came back with this, which I later found out was the very next track on their eponymously titled album, which I didn’t have at the time:
Okay dude, you won that one.